AC/Heater control switch issue

[hatzie]

Originally Posted by sntrym95

So one wire provides power to the motor, another is the ground, and the other wire is the reference wire that is told by the switch where to go, aka the position wire. The position wire does not get 12v, but I'm not sure what voltage it's supposed to be.

I'm not saying the switch isn't bad, but before you drop whatever at the junkyard or a new one at $140, make sure you test out that wire thoroughly. The factory service manual will have the correct info (available at a library) or see if ChevyTech chimes in with his vast knowledge and collection of diagrams.

Or get another motor and see if it works.

The 1998 GM Service Manuals are in my Signature...

[sntrym95]

Originally Posted by hatzie

The 1998 GM Service Manuals are in my Signature...

Good call. Didn't catch it. Thanks for posting those BTW, they are very handy to have around.